Home / 13,228.65-18,258.62-8,504.73

Finding the Fourth Proportional to 13,228.65, 18,258.62 and 8,504.73

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Solution

The fourth proportional to 13,228.65, 18,258.62 and 8,504.73 is: 11,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.65 : 18,258.62 = 8,504.73 : x
  2. Step 2: Convert to fraction form
    13,228.65/18,258.62 = 8,504.73/x
  3. Step 3: Cross multiply
    13,228.65x = 18,258.62 × 8,504.73
  4. Step 4: Simplify right side
    13,228.65x = 155,284,590.75
  5. Step 5: Solve for x
    x = 155,284,590.75/13,228.65
  6. Step 6: Final answer
    x = 11,738.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.